Increased Available Phosphate by Shell Meal Fertilizer Application in Upland Soil

밭 토양에서 패화석비료 시용에 따른 유효인산의 증대

  • Lee, Chang-Hoon (Division of Applied Life Science, Graduate School, Gyeongsang National University) ;
  • Lee, Ju-Young (Division of Plant Nutrition, National Institute of Agricultural Science and Technology, RDA) ;
  • Ha, Byung-Hyun (Product Development Team, Namhae Chemical Co.) ;
  • Kim, Pil-Joo (Division of Applied Life Science, Graduate School, Gyeongsang National University)
  • 이창훈 (경상대학교 대학원 응용생명과학과) ;
  • 이주영 (농업과학기술원 식물영양과) ;
  • 하병연 (남해화학 중앙연구소) ;
  • 김필주 (경상대학교 대학원 응용생명과학과)
  • Received : 2005.01.13
  • Accepted : 2005.01.31
  • Published : 2005.02.28


Previous studies showed that shell meal fertilizer from the oyster farming industry could be a potential inorganic soil amendment to increase Chinese cabbage productivity and to restore the soil nutrient balance in upland soil (Lee et al., 2004). Herein, shell meal fertilizer was applied at rates of 0, 4, 8, 12, and $16Mg\;ha^{-1}$ to upland soil (Pyeontaeg series, Fine silty, Typic Endoaquepts) for Chinese cabbage cultivation. We found available phosphate increased significantly with shell meal fertilizer application, due to high content of phosphate ($1.5g\;P_2O_5\;kg^{-1}$) in the applied shell meal fertilizer. In addition, high pH of shell meal fertilizer contributed to increase available phosphate content by neutralization of acidic soil. Total and residual P contents increased significantly with increasing shell meal fertilizer application, but we could not find any tendency in organic and inorganic P fraction. Of extractable P fraction, water-soluble phosphorus (W-P) and calcium-bound P (Ca-P) contents increased significantly with increasing application level. By contrast, aluminum and iron-bound P (Al-P and Fe-P) decreased slightly with shell meal application. The present experiment indicated that shell meal fertilizer had a positive benefit on increasing available phosphate content in arable soil. And so the increased available phosphate by shell meal fertilizer may decrease phosphate application level and then reduce phosphorus loss in arable soil.


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